SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 2)
    Function uniqMerge (children 1)
     ExpressionList (children 1)
      Identifier Uniq
    Function uniqThetaMerge (children 1)
     ExpressionList (children 1)
      Identifier UniqThetaSketch
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier stored_aggregates